I did a search for the Ithaca o/u and I hate to say it, but my first impressions is that its going to go over like a turd in the punch bowl.
They say its a sporting clay gun, but their only offering it in 26, 28, and 30 barrels lengths when most sporting clay shooters these days are going with 32 barrels.
The receiver looks deeper than a Browning!! There is around a of material over the top barrel at the receiver.
It looks like a 3/8 gap between the barrels.
I really want a US made o/u for sporting clay, and had high hopes after reading that they would be around $2500, but after seeing it, I dont think so.
http://www.fieldandstream.com/blogs/gun-nut/2010/01/live-shot-show-ithaca-phoenix-over-under